Try Another Version of This Question Write `cos((2 pi)/9)` in terms of its cofunction. Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)Enter DNE for Does Not Exist, oo for InfinityDecimal values are not allowed `sin((5 pi)/18)`
Try Another Version of This Question
Write `cos((2 pi)/9)` in terms of its cofunction.
Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)Enter DNE for Does Not Exist, oo for InfinityDecimal values are not allowed